Pipe-coupling.



A. KRAEMBR.

PIPE COUPLING.

APPLICATION FILED OUT. 11, 1913.

1,108,212. Patented July 14,1914

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nniTnn STATES PATENT OFFICE.

AUGUSTUS KRAEMER, 0F TEES PINOS, CALIFORNIA.

PIPE-COUPLING.

Application filed October 11, 1913.

To all whom it may concern Be it known that I, AUGUSTUS KRAEMER, acitizen of the United States, residing at Tres Pinos, in the county ofSan Benito and State of California, have invented certain new and usefulImprovements in Pipe-Couplings, of which the following is aspecification.

This invention relates to improvements in pipe couplings, and moreespecially to the type of such couplings used in connection with hose orother form of water and air conduit pipe where it is desirable toprovide a leak proof coupling of simple and economical form and one thatwill facilitate the quick detachment and attachment of the pipe in whichsaid coupling is inserted.

A further object of my invention is to provide a coupling whereby a firehose may be quickly attached to a hydrant and will withstand the unusualpressure incident to the use of hose of this character.

A further object is to provide a pipe coupling that may be used ifdesired without gaskets and without a threaded engagement between theparts of which the coupling is formed.

Other objects of general utility are con served by my automatic couplinghereinafter described, which will be readily apparent to those skilledin the art and need not be set forth in detail.

Referring to the accompanying drawings, forming part of thisapplication: Figure 1 shows in elevation a coupling of a single typeconstructed according to my invention; Fig. 2 is a longitudinal sectionon the line 22 of Fig. 1; Fig. 3 is a cross-section on the line 33 ofFig. 1, and Fig. 4 is a cross-section on the line 4.l of Fig. 1.

The reference character 5 represents the main or body member of thecoupling, and 10 the nipple or complementary member which interfits thebody, as clearly shown in Fig. 2. The body 5 may be made in any size andshape desired for the purpose for which it is intended, and at one endis provided with a reduced and externally threaded extension 5*. Theportion adjacent the extension is also externally threaded. as at 5",said latter portion being of greater diameter than the extension 5 butof less diameter than the main portion of the member so as to providethe annular shoulder 5. Extending longitudinally of the Walls of themember 5 are three grooves 5 the same Specification of Letters Patent.

Patented July 14, 1914.,

Serial N 0. 794,540.

terminating a short distance from one end of the member 5. The main boreof the member 5 is cylindrical and of uniform di ameter as at 5 but fora portion of the length of said member the bore is in truncoconical formso as to provide the tapering walls 5 Arranged upon the reduced portionof the body 5 between the threaded portion 5 and the shoulder 5 is acylindrical sleeve 6 formed with an annular groove 6 on its inner walland near one end bounded by an annular shoulder 6 a nut 7, internallythreaded to engage the threads 5",is formed with an annular externalshoulder 7* and a groove 7*, said shoulder and groove inter-fitting thecorresponding groove and shoulder of the sleeve 6. In order to assemblesaid sleeve and nut, the former is made with a removable segment 6 whichis attached to the adjacent portions of the ring 6 by screws 6 which areaccessible through recesses 6, cut

in the outer face of the segment 6 as clearly shown in Fig. 3.

Arranged in each of the grooves 5 is a spring tongue 8, one end of whichextends at right angles to form a hook 8, and the other end is securedto the inner side of the sleeve 6 by screws 8*, as shown in Fig. 2. Thespring hooks 8 rest upon a two-part ring 9, each of said parts beingformed with outwardly extending lugs 9 through which screws 9 extend tofasten the two halves together, as shown in 9 Beveled seats 9 are cut inthe outer face of these ring sections, in which lie the spring arms 8.The nipple 10 which interfits with the coupling member 5, is providedwith an annular groove 10 in its outer wall and near its outer end, saidgroove being adapted to receive the hooks 8 of the spring arms 8 whenthe same are in their innermost positions, and are somewhat larger thanthe thickness of said hooks so as to provide a certain amount oflongitudinal play for said hooks in the adjustment of the device. Theouter wall of the nipple 10 is beveled as at 10 to fit thecorrespondingly tapered wall 5 of the member 5 and the bore of thenipple 1O registers with the cylindric bore 5 of the member 5. The boreof the nipple is also internally threaded as at 10 to receive theexternal threads of a faucet or hose collar or other terminal with whichit is desired to connect my improved coupling.

Adjacent the sleeve 6 my improved coupling, With said faucet, it" I Willbe necessary merely to attach the mouth v the tapering walls of the,nippleand thecorresponding alls ofqthe body.- 5, it Will beapparentthat-by, turning thenut 7, the.

In a device constructed in substantial accordance with the drawings andabove description, it Will 'be apparent that if the nipple 10 is screwedinto place,- upon a faucet for instance, and it be desired toconnectahose, equipped with the other end of or enlarged bore end of the body 5to the nipple and, push upvvardly or inwardly upon the latter until thehooked end s; -8 enter the recesses 10 Whereuppn. the aterenter- 111g}unden pressure the boreofthe-nipple 10 Will not be able to dislodgeordisconnect the member 5 and, hatever may be attached to they threadedextension 5* of said memben,

In order to. effect a tight connection, between sleeve 6,-t toWhich-theinner ends: of the spring arms 8 aresecured, vvill bel'movedlong tudinally-, thus forc ngv the hooks in. a

corresponding direction, andueffect as closea un onbetween the twomembers as their It; Willv respective, structures twill permit. alsobeapparent that by partially rotating the,collar 4c in.one direction, thespring armsS will be pressed outwardly; by the in- 5 or the member 10may be left in position upon thearticle to Which it is desired toconnecta hose. or other extension, but in "practice I prefer to usethenipple 10 in this positionv as it is small and Will not interfere withthe ordinary use of a faucet.

I have not shown the use of gaskets With -my improved .coupling as sameare of common use With devices ofthis character, notdo I Wish to beunderstood as indicating the exact details of construction, as these Ymaybe varied ithin the limitations of my invention. 7 J

' I claim as nevv:

1. A coupling, consisting of a cylindric body member having a portion ofits internal bore tapering outwardly, a sleeve slidably andnon-rotatably mounted on said body, portion, a nut having va threadedengagement With ,said body-portion and ensaid sleeve tov move samelcn'gitudie nally; uponi therotat on of sa1d.nut,y1eld- .ing hook shapedarmsisecuredat oneend to said; sleeve and movable longitudinally in Waysformed therefor in said body per-- tion a nipple-having a tapering faceadapted to lit the tapering face of the ,body member, of thecoupling,means on said nipple. adapted tobe engaged by SL1Cl hook shaped I arms,and means for. disengaging said arms from said means,

2. A coupling, consisting ofa cylindric body member having a portion ofits internal bore tapering outwardly, a sleeve-slidably and,non-rotatably mounted on said body portion, a nut having a threadedengagement Wlth said body portion and engaging said sleeve to move samelongitudinally upon the rotation of said nut, yielding hook shaped armssecured at one end to said sleeve and movable longitudinally in Waysformed therefor in said body portion, anipple having a taperingfaceadapted to fit the tapering face of the body member of the coupling:said nipple having recesses adapted to be engaged by said hookshapedarms, anda collar adapted vto disengagesaid arms from said recesses.

In testimony whereof I afliX my. signature in the presence of two.witnesses.

AUGUSTUS KRAEMER. Witnesses:

TIMOTHY OGonnon, HENRY E. BRYAN,

Copies! this, patent-maybe obtained for five cents each, by addressingthe. commissioner of Patents.

' Washington, D. G.

